The
arrows specify directions of an application of forces by fingers
of hands.
At curving rings 20 < d < 36 mm, that rings to fill in
a nipper (fig. 5a), they are necessary previously for turning up
on the lengthened nipper pins and, migration along pins, to fill
under the third truncated pin.
At curving rings d 20 and 25 mm, when the rings are required
to be bent under the scheme of a shemale . Компания "ОТК инструмент" - продаем надежный резьбонарезной инструмент, труборез в Москве . Вагон-дома на шасси на сайте "Металлон": модульные блок контейнеры. fig.
2a, at a completing stage of curving it is necessary
manually to displace an arc of greater radius of a ring
concerning an average pin on magnitude of width of a ring. версия для печати
After reaching the given shape of curving the curved rings by
same "nipper", at use by "nipper", or
tweezers with round jaws, at use by a mask, are put in an
actuator rod sleeve and are established in a groove atop
previously of inserted rubber ring.
It is necessary to have in view of, that at presence of
accommodating for curving a ring of the given diameter, this
accommodating is suitable for curving rings of the greater
diameter provided that the width of rings is identical. Thus the
curved ring will take the form of a . fig. 2b.
The sizes of accommodatings are given from a condition, that
radius of curving of a ring is not less its width.
The present recommendations do not give the sizes of
accommodatings for rings d > 50 mm as these rings can be bent
or manually without accommodatings, or on accommodating
manufactured for a ring of a smaller diameter.
If necessary it is possible to calculate manufactures of a
mask including for d > 50 mm, its sizes under the formulas:
D =0,19 (d+S); where d - diameter of a rod, S - width of a
ring
L = 1,5 D
M = 2 D
P = 1,1 D
After installation of an obturating ring it is necessary to
straighten by the brass polished or plastic handset and after
that to calibrate. Calibre (fig.1b)
represents a rod with contact lead-in, on the sizes and
condition of a surface a completely repeating rod of an actuator
(pintle of a collector).
Calibre is greased with oil and with small turn in both sides
is interposed into seal on the part of low pressure before
guaranteed transition of a contact surface of seal to a
cylindrical surface of calibre.
